Greek ligatures in early modern printing; Griekse ligaturen in de vroeg-moderne boeken; An Index of Greek Ligatures and Contractions, William Wallace, 1923; The Ligatures of Early Printed Greek, William H.Ingram, 1966; Alphabetum Graecum, Parisiis 1532, Christianus Wechelus; Aphabetum Graecum, Lugdunum 1544, Sebastianus Gryphius; Alphabetum Graecum, Dionysius Halicarnassu, Menses Graecorum, Parisiis 1550, Guil. Morelius; Alphabtum Graecum, Lutetiae 1550, Robertus Stephanus; Aphabetum Graecum, Theodorus Beza, 1554, Robertus Stephanus; Aphabetum Graecum, Antverpiae 1566, Christophorus Plantinus; Alphabeum Graecum, Romae 1771.